Diverter, liquid-level indicator and chemical pre-treatment and post-treatment implementations useful in waterless urinals

ABSTRACT

A diverter ( 170, 270 ) atop the upper wall ( 110 ) of a cartridge ( 100 ) and over the opening ( 114, 115 ) therein avoids direct access of urine to the opening and the sealant ( 105 ) within the cartridge. The diverter is spaced by standoffs ( 182, 282 ) from the upper wall to provide a urine flow passage. A float ( 274 ) can be incorporated in the diverter to provide a visible signal of the presence of collected urine on the cartridge upper wall. A pre-treatment chemically-constituted tablet ( 210 ) held by a retainer ( 200 ) in the diverter provides sanitizing and/or deodorizing means. Post-treatment chemically-constituted tablets ( 224   a ) or pellets ( 224   b ) placeable at the outlet of the cartridge protect the drain pipe from corrosion and other harm.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims the benefit, and is a continuation-in-part of both U.S. Provisional Application No. 60/535,463 filed 09 Jan. 2004 and U.S. Provisional Application No. 09/579,921 filed 14 Jun. 2004, and is a continuation-in-part of the following provisional and nonprovisional applications: Ser. No. 10/647,603 (Docket No. 7148-108A-US), filed 25 Aug. 2003; Ser. No. 10/744,708 (Docket No. 7148-111A-US), filed 23 Dec. 2003; Application No. 60/535,463 (Docket No. 7148-117-PR), filed 09 Jan. 2004; and any of their predecessor applications.

REFERENCE REGARDING FEDERAL SPONSORSHIP

Not Applicable

REFERENCE TO MICROFICHE APPENDIX

Not Applicable

1. Field of the Invention

The present invention relates to a diverter, a liquid level indicator and a liquid conditioner and, more particularly, to improved devices and methods therefor for use in a urinal, such as in a waterless urinal.

2. Description of Related Art and Other Considerations

In waterless urinals, such as described in U.S. Pat. No. 6,053,197 and No. 6,xxx,xxx [Ser. No. 09/855,735 (filed 14 May 2001)] and U.S. patent application, Ser. No. 10/143,103 (filed 07 May 2002), it has been observed that urine can be directed with some intensity through the opening of the cartridge and impinge with sufficient force on the sealant therein to adversely affect its sealing function collect and that, because of blockages within the cartridge, urine can collect on its upper surface and possible flow therefrom to create a sanitary problem. Further, in the mechanism described in above-mentioned U.S. Pat. No. 6,xxx,xxx, such collected urine may corrode or otherwise disrupt the mechanical and electrical operations of the liquid flow meter described therein.

SUMMARY OF THE INVENTION

These and other problems are successfully addressed and overcome by the present invention, along with attendant advantages, by placing a diverter atop the upper wall of the cartridge and over the opening therein for avoiding direct access of urine to the opening. The diverter is spaced from the upper wall to provide a urine flow passage. An indicator, such as a float, can be incorporated in the diverter to provide a visible signal of the presence of collected urine on the cartridge upper wall. Further, a pre-treatment chemically-constituted tablet or other substance may be incorporated in the diverter to provide sanitizing and/or deodorizing means. Additionally, one or more post-treatment chemically-constituted tablet or pellets may be placed at the outlet of the cartridge to protect the drain pipe from corrosion and other harm.

Several advantages are obtained derived from these arrangements. The life of the cartridge is increased. Fewer replacements of cartridges are possible. The need to service cartridges is minimized. Profitability is increased.

Other aims and advantages, as well as a more complete understanding of the present invention, will appear from the following explanation of exemplary embodiments and the accompanying drawings thereof.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a view, in cross-section, of a cartridge for use in a urinal with a first embodiment of a urinal diverter positioned thereon and secured to its top;

FIG. 2 is an exploded view, in perspective, of the cartridge, per se, illustrated in FIG. 1;

FIGS. 3 and 4 are perspective views taken respectively from the top and bottom of the cartridge, per se, shown in FIG. 1;

FIGS. 5-7 respectively are side, top and bottom views of the cartridge, per se, shown in FIG. 1;

FIG. 8 is a cross-sectional view of the cartridge, per se, shown in FIG. 5 taken along line 8-8 thereof;

FIG. 9 is a cross-sectional view of the cartridge, per se, shown in FIG. 5 taken along line 9-9 thereof;

FIG. 10 is cross-sectional view of the cartridge, per se, shown in FIG. 7 taken along line 10-10 thereof;

FIGS. 11 and 12 are perspective views of the bottom portion of the cartridge, per se, depicted in FIGS. 1-10, taken respectively from its upper and under sides

FIGS. 13-15 respectively are side, top and bottom views of the cartridge bottom portion shown in FIGS. 11 and 12;

FIG. 15A is a cross-sectional view of a detail of the cartridge bottom portion taken along cutaway line 15A of FIG. 15;

FIG. 16 is a cross-sectional view of the cartridge bottom portion taken along line 16-16 of FIG. 13;

FIG. 16A is a cross-sectional view of a detail of the cartridge bottom portion taken along cutaway line 16A of FIG. 16;

FIG. 17 a cross-sectional view of the cartridge bottom portion taken along line 17-17 of FIG. 16;

FIG. 18 is a cross-sectional view of the cartridge bottom portion taken along line 18-18 of FIG. 15;

FIG. 19 is a cross-sectional view of the cartridge bottom portion taken along line 19-19 of FIG. 15;

FIG. 20 is a bottom view, in perspective, of a second embodiment of the diverter illustrated in FIG. 1, with a urine pre-treatment tablet and a retainer for the tablet latched to the diverter;

FIG. 21 is a cross-sectional view of the diverter, tablet and retainer taken along line 21-21 of FIG. 20;

FIG. 22 is a perspective view of the underside of the diverter shown in FIG. 23;

FIGS. 23 and 24 respectively are top and side views of the second embodiment of the diverter, per se, illustrated in FIG. 22;

FIG. 24A is a cross-sectional view of a standoff spacer detail of the diverter taken along cutaway line 24A of FIG. 24;

FIG. 24B is a cross-sectional view of the standoff spacer detail of the diverter taken along cutaway line 24B of FIG. 24;

FIG. 24C is a perspective view of the standoff spacer detail and pre-treatment tablet retainer latch of the diverter illustrated in FIGS. 24, 24A and 24B;

FIG. 25 is a cross-sectional view of the diverter taken along line 25-25 of FIG. 23;

FIG. 25A is a cross-sectional view of a detail of the diverter taken along cutaway line 25A of FIG. 25;

FIG. 26 is a bottom view of the diverter, per se, depicted in FIG. 22;

FIG. 27 is a cross-sectional view of the diverter taken along line 27-27 of FIG. 26;

FIG. 27A is a cross-sectional view of a detail of the diverter taken along cutaway line 27A of FIG. 27;

FIG. 27B is a cross-sectional view of a detail of the diverter taken along cutaway line 27B of FIG. 27;

FIG. 28 is a perspective view of the retainer, per se, depicted in FIGS. 20 and 21;

FIGS. 29 and 30 are top and side views of the retainer depicted in FIG. 28;

FIG. 31 is a cross-sectional view of the retainer taken along line 31-31 of FIG. 30;

FIG. 32 is a perspective view of the urine pre-treatment tablet, per se, depicted in FIGS. 20 and 21;

FIG. 33 is a cross-sectional view of the pre-treatment tablet taken along line 31-31 of FIG. 32;

FIG. 34 is a side view of the cartridge-gripping core of the cartridge key illustrated in FIG. 29;

FIG. 35 is a perspective view of the first embodiment of the diverter, pre-treatment and retainer depicted in FIG. 1;

FIGS. 36 and 37 respectively are top and bottom views of the first embodiment of the diverter, pre-treatment and retainer depicted in FIG. 35;

FIG. 38 is a side view of the tip side of the first embodiment of the diverter, pre-treatment and retainer depicted in FIG. 35;

FIG. 39 is a cross-sectional view of the first embodiment of the diverter, pre-treatment and retainer taken along line 39-39 of FIG. 38;

FIG. 40 is a side view of the first embodiment of the diverter, per se, depicted in FIG. 1;

FIG. 40A is a cross-sectional view of a detail of the diverter taken along cutaway line 40A of FIG. 40;

FIG. 41 is a cross-sectional view of the diverter, per se, taken along line 41-41 of FIG. 40;

FIG. 41A is a cross-sectional view of a detail of the diverter taken along cutaway line 41A of FIG. 41;

FIG. 42 is a perspective view tablet a float used in the diverter depicted in FIG. 1;

FIG. 43 is a side view of the float illustrated in FIG. 42;

FIG. 44 is a cross-sectional view of the float taken along line 44-44 of FIG. 43;

FIG. 45 is a perspective view of a see-through protective cap used in the diverter depicted in FIG. 1;

FIG. 46 is a side view of the protective cap shown in FIG. 45;

FIG. 47 is a cross-sectional view of the protective cap taken along line 47-47 of FIG. 46;

FIGS. 48 and 49 are perspective views of a plug placeable in the bottom portion of any of the cartridges depicted in FIGS. 1-5, 7-10 and 53-55;

FIGS. 50-52 respectively are side, bottom and bottom views of the plug shown in FIGS. 48 and 49;

FIGS. 53 and 54 are perspective views of cartridges, similar to the cartridge illustrated in FIG. 1, with alternatively packaged post-treatment chemicals, embodied respectively as sticks and spheroids, used to treat urine as it exits the cartridge; and

FIG. 55 is a perspective view of a cartridge placed in a part of a waterless urinal as connected to a drain pipe.

DETAILED DESCRIPTION

Accordingly, as depicted in FIGS. 1-19, an odor trap 98 comprises a cartridge 100, which is sometimes referred to as an “oil sealant-preserving drain odor trap.” Cartridge assembly 100, acting as a flow trap for urine or other generally fluid waste products, comprises a top portion 102 and a bottom portion 104. Wastewater 103, such as a fluid with urine therein, and an oily liquid odor sealant 105 floating on the wastewater is contained within the cartridge. Alternate embodiments of a diverter, such as diverter 270, can be secured to top portion 102.

Top portion 102 has a cylindrical configuration defined by a tubular wall 106 terminated by an opening 108 at its lower end and a top wall 110 at its upper end. The top wall is sloped downwardly to a flat, generally horizontal flat center portion 112 in which an entry opening 114 is disposed, to act as a urine inlet. As depicted in FIG. 6, opening 114 comprises a tripartite arrangement of three arced slots 114 a, 114 b and 114 c. A hole 115 is centrally positioned within center portion 112. As will be described with respect to FIGS. 20-47, slots 114 a, 114 b and 114 c and hole 115 are adapted to hold either of the two diverters depicted therein to cartridge 100. Top portion 102 is further provided with three keys 116 of which one may be of different length than the other two (e.g., see FIG. 2) for purposes of properly placing and orienting cartridge 100 within a urinal, as more fully described in U.S. Pat. No. 6,644,339 (the parent application of above-noted Ser. No. 10/647,603).

Top wall 110 is provided with a recess 117, for example as shown in FIG. 5 at its outer periphery to accept a seal, such as O-ring seal 228 (see FIG. 44). Recess 117 has a small dimension sufficient to minimize the trapping of urine therein.

Top wall 110 of top portion 102 is further provided with three openings 118 which act as air vents that communicate with the interior of cartridge 100. In the event that one or two may become clogged, such as by urine when the urinal is in use, there will be at least one that remains open. Openings 118 also provide a means by which a tool may be inserted therein for the purpose of inserting and removing the cartridge into and from a urinal, as also described in above-noted co-pending provisional application No. 60/535,463, now patent application Ser. No. xx/xxx,xxx [Attorney Docket No. 7148-125]. Accordingly, for purposes of their use as tool engagement means, it is preferred that the outermost two openings be approximately diagonally opposed to one another. However, the placement or use of these openings may be otherwise designed to accommodate other tool configurations.

As best shown in FIG. 9, the interior of top portion 102 is divided by a bowed vertical separator 120 into two compartments, respectively an inlet compartment 122 and an outlet compartment 124. Vertical separator 120 is secured or molded to the interior surface of tubular wall 106 and to the underside of top wall 110 in any convenient manner. The bottom end of the vertical separator terminates in an end or terminus 121 b which is disposed to be connected to a baffle 150. When top and bottom portions 102 and 104 are placed together and a discharge section 128 (FIGS. 11-19) of bottom portion 104 extends into outlet compartment 124, inlet compartment 122 and outlet compartment 124 have generally equal volumes. It is important that the compartment volumes be made as equal as possible to ensure that the pressures on both sides of vertical separator 120 remain equal during use of the cartridge. Such pressure equality helps to minimize syphoning or, alternatively, to maximize resistance to syphoning between the compartments and, of particular importance, of sealant 105 from the inlet compartment to the outlet compartment. Thus, the usable life of the cartridge is improved by avoiding premature failure thereof. Additionally, any impediment to liquid flow in minimized.

Vertical separator 120 is bowed, e.g., curved or bent, to accommodate centrally positioned entry opening 114 which needs to fully communicate with inlet compartment 122. The illustrated curved bowing of the vertical separator further enables air vent openings 118 also to communicate with the inlet compartment. It is to be understood, however, that the vertical separator need not be curved as illustrated; it may take any configuration that will effect its purpose, that is, to provide equally volumed compartments and to oblige the communications of openings 114 with the inlet compartment. Therefore, for example, if the air vent openings were not used as a means to cooperate with a cartridge inserting and removing tool, as above described, and/or entry opening 114 were not centrally positioned in top wall 110, or for any other reason apart from its compartment volume-defining purpose, vertical separator 120 may be otherwise configured.

Bottom portion 104, as depicted in FIGS. 2 and 11-19, comprises a pan 126 and a discharge section 128 extending upwardly therefrom. The pan includes a wall 130 terminating at an edge 132 (FIG. 16) which provides a tongue-in-groove engagement with tubular wall 106 at its lower end opening 108, as best seen in FIG. 17, to provide a fluid-tight engagement between top and bottom portions 102 and 104. The inner surfaces of pan 126 are rounded to prevent sharp angled corners and are smoothed to enhance fluid flow and to discourage build up of matter and bacteria or other debris.

Upwardly extending discharge section 128, which as described above extends into outlet compartment 124 of top portion 102, includes a tube 134 that communicates with outlet compartment 104 and opens at an exit port area 136 through pan 126 for discharge of fluids, e.g., wastewater fluid 103, and other undesired matter from the outlet compartment to a drain 220 (FIG. 55). The discharge section also includes a pair of tubular chambers 138 for receipt of post-treatment chemicals for treating the exiting urine, as contained in control stick 224 a or pellets 224 b (FIGS. 53-55), as more fully described in co-pending application, Ser. No. ______ (provisional application No. 60/579,921). Chambers 138 are closed at walls 140 (see FIGS. 11 and 18) at one of their ends at the uppermost part of upwardly extending discharge section 128 to prevent flow of fluids thereinto from the outlet compartment, and are open at their other ends 142 (see FIGS. 12 and 18).

As shown in FIGS. 16, 16A and 19, a flow director 144 in tube 134 adjacent exit port area 136 comprises an angled part which is adapted to direct fluid flow towards ends 142 of tubular chambers 138 for impacting control stick or pellets 224. Such directed fluid flow is also implemented by a pair of vertically extending ribs 145 which are formed on the walls of tube 144, and by an inclination on top wall 140 towards tube 134 and ribs 145.

A key 146 and a keyway 148 are provided respectively on the interior surface of tubular wall 106 (see FIGS. 2 and 9) and on the backside of upwardly extending discharge section 128 (see FIGS. 11, 13 and 16). The key and keyway are disposed to provide an orientation and proper alignment between top and bottom portions 102 and 104 and, through the orienting mechanism of keys 116 with the urinal, to place exit port area 136 adjacent exterior drain 220 from cartridge 100.

As depicted in FIGS. 2 and 8, a baffle 150 is disposed to be secured to curved vertical separator 120 for improved direction and flow of fluids through the cartridge in a region from inlet compartment 122 to outlet compartment 124, as more fully described in co-pending patent application, Ser. No. xx/xxx,xxx (U.S. Provisional Application No. 60/579,921, filed 14 Jun. 2004) [Attorney Docket 7148-119-US].

Cartridge 42 is provided with an upper wall 44 in which a central opening 46 may be disposed. Opening 46 may comprise a simple hole or one configured as a tripartite arrangement of three arced slots 46 a, 46 b and 46 c, centered about a generally horizontal flat center portion 48 as best shown in FIG. 1A. A hole is centrally positioned within center portion 112. As will be described with respect to FIGS. 36-43, slots 114 a, 114 b and 114 c and hole 115 are adapted to hold either of the two diverters depicted therein to cartridge 100. In the illustrated configuration, cartridge 42 is disposed to receive urine through central opening 46 and transported to a drain such as may be connected to a urinal. Such a cartridge may take any form, for example, as described in U.S. Pat. Nos. 6,053,197, 6,245,411, 6,644,339 and 6,xxx,xxx [Ser. No. 09/855,735 (filed 14 May 2001)].

One embodiment of the urine diverter depicted in FIGS. 20-27. Here a diverter 170 is positionable atop cylinder upper wall 110, e.g., as shown in FIG. 1, for protectively covering cartridge openings 114 and 115 at center portion 112, primarily to provide a circuitous path for flow of urine to the opening. Therefore, urine is prevented from directly contacting and entering into the openings. Diverter 170 includes a shell 172 and, if desired, a deodorant and/or sanitizing tablet 210 and a tablet retainer 200 (see FIGS. 28-33) for retaining the tablet within shell 172. The diverter is slightly spaced from upper wall 110 of cartridge 100 to assure a clear path for flow of the urine and to space retainer 200 and tablet 210 from the cartridge upper wall. As shown in detail in FIGS. 24 and 24A-24C, such spacing is effected by use of a standoff 182, depending from shell 172 and comprising a large portion 182 a and a smaller portion 182 b. Portion 182 b is made as small as possible to permit the smallest contact of the diverter with the cartridge and, therefore, to provide the largest possible unobstructed flow path.

Shell 172, as for example shown in FIGS. 21 and 27, comprises an upper surface 184, terminated by a periphery 186 with a downwardly depending flange 188, and a central opening 190. Upper surface 184 slopes downwardly towards periphery 186 to encourage flow of urine towards the periphery. Inwardly-facing bumps or protuberances 191 are formed on large portion 182 a of standoffs 182, as best shown in FIGS. 27 and 27B.

A tubular housing 194 (see FIGS. 21, 22 and 26) preferably of cylindrical configuration is secured at one end to the under surface of shell 172 and terminates in a securing mechanism 198 at its free end. A smaller diameter, slightly conical end 102 is formed at the free end, and is sized to form an interference fit within opening 115 in top cartridge upper wall 110.

With reference to FIGS. 28-31, tablet retainer 200 comprises and open-structured cup 202 for supporting a tablet 210 (see FIGS. 32 and 33) and for exposing the tablet to any urine collected in top wall 110 of top portion 102. The open-structured cup comprises an outer ring-like member 204, an inner ring-like member 206, and a plurality of spokes 208 connecting inner and outer ring-like members 206 and 204. The dimension of the periphery of outer ring-like member 206 and that of the inner surface on flange 184 of shell 172 are correlated to enable the outer ring-like member to fit within the flange and to latch over bumps 191 so as to latch retainer 200 to shell 172 and, thereupon, to hold tablet 210 in position as shown in FIGS. 20 and 21 and spaced slightly above cartridge top wall 110. In addition, tablet 210 is configured generally as a donut having an inner cylindrical opening 212 which is adapted to fit over the outer periphery of inner ring-like member 204.

The contents of tablet 210 include a formulation of citric acid, quaternary ammonium and triclosan, and a binder to hold the formulation together. The citric acid is used (1) to adjust the ph in the cartridge, between 5.5 and 3.0 ph to ensure that the contents remain acidic, and to prevent alkalinity which would otherwise degrade the sealant, (2) to inhibit biological growth and/or (3) to act as a cleaning agent, e.g., to remove scale and other minerals, stains, etc., within the cartridge and drain pipe. The binder, a polymer binding medium which holds and permits release of the agents held therein. It is believed that the quaternary ammonium comprises a surfactant having a negative ion which is adapted to combine with a positive ion surfactant and to form precipitants. The problem to be avoided is to inhibit the breakdown of the sealant by positive ion surfactants, such cleaning agents used in urinals. While a negative ion surfactant, such as Hyamine 1622, trademark of Rohm and Haas, has been found to be useful, the requirement is one that militates against the breakdown of the sealant. Triclosan, trademark of ______, is a biocide which is designed to combine with polymers and to protect the sealant from bacteria. The binder is formulated from a slightly soluble material, e.g., N, N-ethylenebisstearamide, which can be slowly worn away by water such as to the extent that its life will last at least to the life of the cartridge.

Another embodiment of the urine diverter depicted in FIGS. 35-47. Here diverter 270 is positionable atop cylinder upper wall 110, as shown in FIG. 1, for protectively covering cartridge openings 114 and 115 at center portion 112, primarily to provide a circuitous path for flow of urine to the opening. Therefore, urine is prevented from directly contacting and entering into the openings. Diverter 270 includes a shell 272, a urine level detector, comprising a float 274 and a see-through protective cap 276, and, if desired, a deodorant and/or sanitizing tablet 210 and a tablet retainer 200 (see FIGS. 28-33) for retaining the tablet within shell 272. The diverter is slightly spaced from upper wall 110 of cartridge 100 to assure a clear path for flow of the urine and to space retainer 200 and tablet 210 from the cartridge upper wall. As shown in detail in FIGS. 40 and 40A, such spacing is effected by use of a standoff 282, depending from shell 272 and comprising a large portion 282 a and a smaller portion 282 b. Portion 282 b is made as small as possible to permit the smallest contact of the diverter with the cartridge and, therefore, to provide the largest possible unobstructed flow path.

Shell 272, as for example shown in FIGS. 41 and 41A, comprises an upper surface 284, terminated by a periphery 286 with a downwardly depending flange 288, and a central opening 290. Upper surface 284 slopes downwardly towards periphery 286 to encourage flow of urine towards the periphery and away from opening 290. Further, a rim 292 surrounds opening 290 also to encourage the outward urine flow and, in particular, to prevent urine from entering opening 290. Inwardly-facing bumps 291 are formed on large portion 282 a of standoffs 282.

A tubular housing 294 (see FIGS. 35 and 37-41) preferably of cylindrical configuration is secured at one end 296 (FIG. 41) to the under surface of shell 272 about opening 290 and terminates in a latching mechanism 298 at its second end 300. An inwardly directed circular protuberance 302 is formed at end 300. The second end is also formed with cut-away portions 304 which dissect protuberance 302 into legs 303 to permit a bending of the latching mechanism. Latching mechanism 298 comprises pairs of facing teeth 306 at the ends of legs 303 which are adapted to latch into arced slots 114 a, 114 b and 114 c of cartridge top portion 102 for securing diverter 270 to cartridge 100.

Also formed in the under surface of shell 272 about opening 290 and within the interior of tubular housing 294 is a recess 296 (FIG. 41) in which a ring 298 of ferromagnetic material (see FIG. 35) is molded.

With reference now to FIGS. 42-44, float 274 comprises a generally tubular body 318 from which a stem 320 extends from its upper surface. Its lower surface 322 is concavely formed so that any liquids thereon will flow off the concave surface and not collect thereon or leave deposits after the liquid has evaporated. A plurality of ribs 324 are placed about body 318, and extend slightly below concave surface 322 so as to help any liquid to collect and form drops for facilitating the removal of liquid from the float. Ribs 104 are configured with a generally triangular cross-section to form outer peripheries having a small surface which, in aggregation, delineate a cylindrical surface that fits closely within the inner surface of shell-depending tubular cylindrical housing 324. Accordingly, ribs 324 permit the float to move between the under surface of shell 272 and cartridge upperwall 110. The float is retained within tubular cylindrical housing 294 on protuberances 302 therein. Insertion of the float within the housing is permitted by flexure of its lower or second end 300 through the medium of cut-away portions 304. Float 274 preferably is molded from a material that can be tinted so as to make it easily viewable, such as by a bright red and/or florescent shade, especially from the top of stem 320. When tablet retainer 200 is used, a passage within inner ring-like member 204 enables contact of the float with any urine collected in the upper wall of cartridge 100.

A magnet 326, having the shape of a toroid, is secured to float 274 about its stem 320 and, upon upward movement of the float, latches to ferromagnetic washer 298 and holds the float against shell 272.

Protective cap 276, as illustrated in FIGS.45-47, is configured to resemble a mushroom and comprises an enlarged head 330 and a relatively smaller stem 332 extending therefrom. Stem 332 is recessed to form a hollow 334, and is sized to extend through shell upper surface opening 292 and thereby to receive float stem 320. An indentation 336 (FIG. 47) is formed beneath enlarged head 330 adjacent hollow stem 332 and helps to discourage flow of urine onto the hollow stem. Indentation 336 thus acts as an adjunct to rim 292 formed about shell opening 290 to help in controlling the flow of urine. Protective cap 276 is formed from a clear or translucent material, such as of acrylic plastic, to enable viewing of float 274 and, in particular, the top of its stem 320.

As shown in FIGS. 48-52, a plug 410 is disposed to be attached to bottom portion 104 within a part of exit port area 136 and to operate as a closure to open ends 142 of tubular chambers 138. A pin 412 extends from the top side of plug 412 and is disposed to engage with a keyed interference fit coupling within an opening 414 (see FIGS. 34B and 46) in bottom portion 104 to join the two parts together. Both pin 412 and opening 414 have mating ribs that, when inter-engaged, orient plug 410 with tubular chambers 138. The plug is formed with a pair of tubular openings 416 having the same dimensions as those of tubular chambers 138 of bottom portion discharge tube section 128. One side of tubular openings 416 is formed to provide an open basket-like weave 418 with openings 420, and a base 422 which is adapted to support a holder of post-treatment discharge control chemical agents, configured as sticks 424 a or pellets 424 b. It is through openings 420 that fluid is directed by the two-part flow director comprising angled ledge 144 and ribs xxx in tube 134.

A pair of such post-treatment discharge control sticks 424 a or pellets 424 b, of which one each is illustrated in FIGS. 53 and 54 and identified generally in FIG. 55 by indicium 424, are disposed to be placed within tubular chambers 138. Each one of pellets 424 b, as having a spheroid shape, rests against the inner wall of tubular chambers 138 with a smaller contact than does the contact between stick 424 a with the inner wall and, therefore, is the preferable shape, as being more likely to move downwardly as fluid slowly erodes the post-treatment discharge chemicals. Each post-treatment discharge control stick or pellet includes citric acid and, if desired, quaternary ammonium, a biocide and cleaning agents held in a time-release binder. Its use is primarily as a descaling agent to help maintain a clean drain pipe, and especially in environments where the cartridge use pattern is such that additional descaling is needed. The post-treatment discharge control sticks or pellets may be used alone or in conjunction with pretreatment control tablet 410.

When all the above-described components are assembled together, they form cartridge 100 as depicted, for example, in FIGS. 1 and 36. This assembled cartridge is then adapted to be placed within a waterless urinal 426, a portion of which is illustrated in FIG. 55, which is coupled to a drain 420 with exit port area 136 as provided through the orienting mechanism of keys 116. An O-ring seal is placed within recess 117 in the periphery of top wall 110.

While pretreatment control tablet 410 and post-treatment discharge control agents 424 a or 424 b are described herein as integral parts of the present invention, it is to be understood that they can be used alone, in other environments. In a like manner, cartridge 100 of the present invention may employ other means, aside from tablet 410 and agents 424, to obtain the desired anti-bacterial, cleaning, etc., purposes. Furthermore, both the tablet and stick/pellet agent can be composed of any number of other agents and ingredients depending upon the end result desired. Also, the diverter may be used alone, without any pretreatment tablet.

Although the invention has been described with respect to particular embodiments thereof, it should be realized that various changes and modifications may be made therein without departing from the spirit and scope of the invention. 

1. In a urine cartridge having an upper wall and an opening therein for receipt of urine and for entry of the urine into the cartridge, a diverter for avoiding direct access of the urine to the opening, comprising: a shell placeable on the upper wall of the cartridge and over the opening therein; and a spacer spacing said shell from the upper wall to permit urine to flow into the upper wall opening of the cartridge.
 2. A diverter according to claim 1 in which said shell includes an essentially fluid-obstructing upper surface bounded by a periphery which is spaced from the upper wall of the cartridge by said spacer, whereby said essentially fluid-obstructing upper surface is configured to direct the urine towards said periphery and thence onto the cartridge upper wall for entry into the upper wall opening.
 3. A diverter according to claim 2 further including a float moveable towards and away from the cartridge upper wall and floatable upon any urine collected on the cartridge upper wall, and an indicator associated with said float and disposed to evidence the existence of any such upper wall collected urine.
 4. A diverter according to claim 3 in which a viewer is associated with said essentially fluid-obstructing upper surface to act with said float as said indicator.
 5. A diverter according to claim 2 in which said essentially fluid-obstructing upper surface of said shell includes an opening therein, and further comprising: a protective cap in said fluid-obstructing upper surface of said shell and closing the opening therein from fluid flow therein, said protective cap including a viewing window; a float moveable towards and away from the cartridge upper wall and floatable upon any urine collected on the cartridge upper wall, said float having a viewable surface which is viewable through said protective cap viewing window when said float is caused to float upon urine collected on the cartridge upper wall and move upwards to said viewing window of said protective cap and thereby to evidence the existence of such upper wall collected urine.
 6. A diverter according to claim 5 further including: a tablet disposed as an agent which is capable of providing any such function as a deodorant and a sanitizing agent; and a retainer engageable with said shell for supporting said tablet.
 7. A diverter according to claim 6 in which said retainer comprises an open-structured cup for supporting said tablet and for exposing said tablet to any urine collected in the upper wall.
 8. A diverter according to claim 7 in which said open-structured cup comprises an outer ring-like member, an inner ring-like member, and a plurality of spokes connecting said inner and outer ring-like members, said inner ring-like member having a passage therein for enabling contact of said float with any urine collected in the upper wall.
 9. A diverter according to claim 8 in which said shell at its periphery includes latches for engagement with said outer ring-like member and for securing said open- structured cup to said shell.
 10. A diverter according to claim 3 in which one of said float and said shell have a magnet secured thereto and the other of said flat and said shell incorporate a ferromagnetic part therein whereby, when said float is moved towards said shell, said float and said shell are magnetically latched together thereby to evidence the existence of any such upper wall collected urine.
 11. A diverter according to claim 5 further comprising: a tubular housing having an end secured to said shell upper surface and extending therefrom, and being positioned coaxially with the shell upper surface opening for housing said float; and a spacing mechanism positioned between said float and said tubular housing for centering and guiding said float within said housing.
 12. A diverter according to claim 11 in which said spacing mechanism comprises a plurality of ribs spaced from one another and forming a minimum contact between said float and said housing.
 13. A diverter according to claim 11 further including a support on the inside of said tubular housing for supporting said float and for limiting travel thereof towards the shell upper surface.
 14. A diverter according to claim 5 further comprising: a tubular housing secured to and extending from said shell upper surface and positioned coaxially with the shell upper surface opening for housing said float; and a plurality of ribs formed on said float and dimensioned to provide a minimal frictional and guiding contact with said housing for centering said float within said housing and for providing a plurality of fluid passages therebetween.
 15. A diverter according to claim 14 in which said float includes a concave-shaped bottom surface facing the urine cartridge upper wall, and said ribs extend beyond said concave-shaped bottom surface to form tips and thereby to encourage flow of any urine from said float and to discourage residual urine deposits thereon.
 16. A diverter according to claim 15 further comprising a ridge surrounding the shell upper surface opening for encouraging flow of urine towards said shell periphery.
 17. A diverter according to claim 16 in which said protective cap has a mushroom-shaped configuration comprising: an enlarged head; a relatively smaller hollow stem extending from said enlarged head through the shell upper surface opening for receipt in said hollow stem of a portion of said float; and an indentation formed beneath said enlarged head adjacent said hollow stem for discouraging flow of urine onto said stem.
 18. A diverter according to claim 11 in which said tubular housing includes a second end spaced from said end which secures said tubular housing to said shell upper surface, and a latching mechanism at said second end engageable with the cartridge upper wall opening for securing said diverter to the cartridge.
 19. A diverter according to claim 1 further including: a tablet disposed as an agent which is capable of providing any such function as a deodorant and a sanitizing agent; and a retainer engageable with said shell for supporting said tablet in said shell.
 20. A diverter according to claim 19 in which said retainer comprises an open-structured cup for supporting said tablet and for exposing said tablet to any urine collected in the upper wall.
 21. A diverter according to claim 20 in which said open-structured cup comprises an outer ring-like member, an inner ring-like member, and a plurality of spokes connecting said inner and outer ring-like members, said inner ring-like member having a passage therein for enabling contact of said float with any urine collected in the upper wall.
 22. A diverter according to claim 21 in which said shell at its periphery includes latches for engagement with said outer ring-like member and for securing said open-structured cup to said shell.
 23. A diverter according to claim 1 further including: an attachment facilitator comprising at least one opening medium in said cartridge upper wall; a coupling mechanism secured to said shell and disposed to engage said upper wall opening for enabling said shell to be coupled to said upper wall and, thus, to said cartridge.
 24. A diverter according to claim 23 in which said coupling mechanism comprises a peg for frictionally engaging said upper wall opening.
 25. A diverter according to claim 23 in which said coupling mechanism comprises latches for latching said latches into said upper wall opening facilitator.
 26. A diverter according to claim 25 in which said opening medium comprises slots for mutual latching with said latches.
 27. A urine cartridge comprising: an inlet compartment for receipt of urine; an outlet compartment having a terminus for transfer of the urine from said inlet compartment to an external drain; a post-treatment chemical agent which is capable of forestalling corrosion and other harm to the drain; and an agent holder for supporting said post-treatment chemical agent in said outlet.
 28. A urine cartridge according to claim 27 in which said agent holder comprises a discharge section including a conduit which defines said outlet compartment terminus and an enclosure for enclosing said post-treatment chemical agent.
 29. A urine cartridge according to claim 28 in which said discharge section enclosure further includes at least one chamber which is closed at a first end in said outlet compartment and open at a second end adjacent said terminus for enabling flow of the urine from said conduit into contact with said post-treatment chemical agent.
 30. A urine cartridge according to claim 29 further including a flow director in said conduit for directing flow of urine towards said chamber second end and into contact with said post-treatment chemical agent.
 31. A urine cartridge according to claim 30 in which said flow director comprises ribs extending substantially along the length of said conduit and terminating adjacent to said chamber second end.
 32. A urine cartridge according to claim 30 in which said flow director comprises a ledge in said conduit angled towards said chamber second end.
 33. A urine cartridge according to claim 30 in which said flow director comprises a ledge in said conduit angled towards said chamber second end and a pair of ribs extending substantially along the length of said conduit and terminating adjacent to said chamber second end.
 34. A urine cartridge according to claim 29 further including a plug secured to and closing said second end, said plug having openings therein for permitting fluid access to said chamber at said second end and contact with exposed portions of said post-treatment chemical agent in said chamber.
 35. A urine cartridge according to claim 34 in which said plug is provided with an open basket-like weave to form said plug openings.
 36. A urine cartridge according to claim 35 in which said plug and said discharge section enclosure each have oriented respective pair of openings and chambers which are aligned in an orientation with respect to one another for holding pairs of said post-treatment chemical agent therein.
 37. A urine cartridge according to claim 36 further including an opening in said discharge section and a pin extending from said plug engageable together with a keyed interference fit therebetween for effecting the discharge section-plug chamber-to-opening orientation.
 38. A urine cartridge according to claim 35 in which said discharge section chambers have inner walls of tubular configuration and said post-treatment discharge control agents comprise pellets shaped as spheroids which rest against said inner chamber walls to provide a minimum contact therewith to facilitate a downward pellet movement as fluid erodes said pellets.
 39. In a urine cartridge having an upper wall and an opening therein for receipt of urine and for entry of the urine into the cartridge, the improvement comprising a float moveable towards and away from the cartridge upper wall and floatable upon any urine collected on the cartridge upper wall, said float having a viewable surface which is viewable when said float is caused to float upon urine collected on the cartridge upper wall and thereby to evidence the existence of such upper wall collected urine.
 40. A urine cartridge according to claim 39 further comprising a protective cap including a viewing window placed over said float for enabling viewing of said float viewable surface.
 41. A urine cartridge comprising: an upper wall having an opening therein for receipt of urine and for entry of the urine into the cartridge; a plurality of tool holes in the cartridge upper wall and positioned exterior of said diverter when placed on the cartridge having an upper wall; said diverter including a shell placeable on the upper wall of the cartridge and over the opening therein and a spacer spacing said shell from the upper wall to permit urine to flow into the upper wall opening of the cartridge; and a tool having prongs for engaging the tool holes in the cartridge upper wall and for inserting and removing the cartridge from a urinal.
 42. A urine cartridge according to claim 39 further comprising a diverter placeable on said cartridge upper wall for avoiding direct access of the urine to the opening, and in which said plurality of tool holes in the cartridge upper wall are positioned exterior of said diverter when said diverter is placed on the cartridge.
 43. A urine cartridge according to claim 39 in which said tool holes form a communication between the interior and exterior of said cartridge.
 44. In an odor trap cartridge containing wastewater and liquid odor sealant floating thereon and having an access entry thereto, a method for conserving the quantity of the liquid odor sealant, comprising the step of diverting incoming wastewater from direct access to the entry.
 45. A method according to claim 42 in which said diverting step comprises the step of shielding the access entry from the incoming wastewater.
 46. A method according to claim 43 wherein said shielding step comprises the steps of placing a shield over the access entry and spacing the shield therefrom.
 47. A method according to claim 44 wherein said shielding step further comprises the step of chemically treating the wastewater prior to its gaining access to the entry. 